Support for power driven units



Sept. 27, 1932. F. D. PELTIER SUPPORT FOR POWER DRIVEN UNITS 2Sheets-Sheet 1 Filed July 17. 1930 Fig? 2'- I N VEN TOR.

TORNEYS,

Sept. 27, 1934. PEL-HERN 1,879,458

SUPPORT FOR POWER DRIVEN UNITS I Filed July 17, 1950 2 SheetsSheet 2 FiETE.

Patented Sept. 27, 1932 UNITED STATES PATENT OFFIOE FRANK I). PELTIER,OF EVANSVILLE, INDIANA, ASSIGNO R, BY MESNE ASSIGNMENTS, T SERVEL, INC.,01? IIE'XV YORK, N. Y., A CORPORATION OF DELAWARE SUPPORT FOR POWERDRIVEN UNITS Application filed July 17, 1930. Serial No. 468,678.

lhis invention relates to supports for power driven units, andparticularly to supports for motor propelled units having a tendency togenerate vibrations, such for example as the motor-pump units employedin mechanical refrigeration systems of-the domestic variety.

The invention'has for its object generally an improved construction andarrangement of parts in supports of the character indicated, which isefficient, economical and readily manufactured.

More specifically, an object of the inven tion is to provide asupporting frame which is rugged and stilt, but has connections with theunit supported of acharacter adapted to yield and absorb substantiallyall vibration transmitted therethrough.

It is also an object to provide a supporting device particularly adaptedto support power units, such as the motor-pump units of mechanicalrefrigerating systems, not only in normal operating service, but whichis also adapted to support the same, when in transit or when beingshipped from one part of the country to another, without injury.

Other objects of the invention will in part b; obvious and will in partappear hereina ter.

lhe invention accordingly comprises the features of construction,combinations of elements, and arrangements of parts which will beexemplified in the constructions hereinafter set forth and the scope ofthe application of which will-be indicated in the claims.

For a fuller understanding of the nature and objects of the invention,reference should be had to the following detailed description taken inconnection with the accompanying members to be supported. As here shown,the

drawings, in which:

Fig. 1 is a top-plan view, part being broken away, showing a mot0r-pumpunit of a mechanical refrigerating system provided with a support inaccordance with the present invention;

.Fig. 2 is a side elevation of the unit and support shown in Fig. 1;

Fig. 3 is an end elevation showing the supporting device when removedfrom the motor-pump unit; and

Figs. 4 and 5 are fragmentary views, mainly in section, showing detailsin the construction of the support shown in Fig. 3.

Referring now to the drawings, and particularly to Figs. 1 and 2,denotes the upstanding legs of main U-ineinbers which have theirbase-portions 11 transversely disposed on and secured to one or morehorizontal base-members 12. As here shown, these basemembers are a pairof parallel channels disposed to have their open sides on the bottom andthe webs on the top and secured to the base-portions 11 in any suitablerigid manner, for example, by so-called spot-welding.

The main U-members, in order to be adapted to spot-welding in theassembly processes, are made from sheet-metal which has, when made up,sufficient mechanical strength and stiffness to support in operatingconditions and in shipment, a power unit, such as here shown generallyat 15, the pump member thereof being indicated at 16 and the motormember at 17 these members being united through the flanged-coupling 18.To this end, the main U-members are preferably stamped from sheet metaland have stiffening ribs struck-up therefrom as shown at 20 along eachedge.

The upper ends of each of the legs 10 of the main U-members are providedwith openings in which are disposed rigid supporting bushings 21, eachof which have nested within the same a yielding bushing 22 and a secondinner rigid bushing 23. This construction is readily seen in Fig. 4where it is seen that the inner rigid bushing carries the end of asupporting screw 24:, which engages with a supporting socket or lug 25formed on the power closed ends of the casing of the pump member 16 havehubs cast thereon at diametrically opposite points which are formed andbored as indicated in Fig. 1 to have sockets 25, while the removablehead of the motor member may with advantage be provided with integralsocket members 25, as indicated in Fig. 1; a portion thereof being shownin Fig. 4.

The supporting frame provided by the union of the base members 12 andthe U member 10 is a rigid structure when spot-welded together andprovides a four-point suspension for a horizontal power unit which isrelatively yieldable, but in a state of rest furnishes substantiallyrigid support for the unit.

The yielding bushings are made of any suitable material which hasinherent resilience and yet is substantially dead-beat or has a naturalperiod of vibration far removed from that of the vibration which may betransmitted to and from the same by the run- ,ning of the power unit.Bushings of soft India rubber are suitable for the purpose, theemployment of rigid bushings in nested relation therewith serving tosave the India rubber bushing from concentrated stresses and from wearand tear immediately on its parts.

The frame which thus supports the motorpump unit'may with advantage beprovided with supplementary supporting means for supporting auxiliarydevices that are operatively associated with the motor-pump unit,whereby the same becomes a single operating unit with the motor and pumpmembers. As shown in Figs. 1 and 2, the motor-pump unit has an outletconduit 26 leading to a condenser 27 that is air-cooled by a fan 28;this latter being driven by a second motor 29 that is preferablydisposed between the condenser and the main motor member, so that theair blown over the condenser may first be drawn over the mainmotor-casing to produce a cooling effect. I

The motor 29 and the condenser 27 are also preferably supported from themain frame in this arrangement and to this end the basemembers 12 areshown as prolonged from under the motor-pump unit 15 and have uprightmembers 30 and 31 secured thereto near the end, which upright memberssomewhat resemble inverted Ls, the lower ends of which are preferablybent about and secured to the base members 12 in any suitable manneradapted to attain rigidity, for example, as shown at 32 in Fig. 5, Wherethey are indicated as spot-welded thereto. The upstanding straight edgeof these inverted Ls is adapted to have perforations at two or morepoints for receiving engaging members from the radiator, such forexample as bolts 33 which are preferably secured therein in anonvibratory manner, for example, by means of the use of a yieldingbushing 34, similar in character to that at 22, which is employed forthe support of the power unit.

The over-hung members of the Us serve as anchor members from which issuspended a supporting means, preferably in the form of a cradle 35, forthe motor 29. This cradle is formed from a strip having a centraldepressed arcuate portion with arms 36 and 37 upturned at the ends thatare secured to overhang portions of the Ls; this securing beingaccomplished in any suitable manner, for

example, by spot-welding. A second arcuate member 38 has a tang 39engaging with a perforation 40 in a fiat portion of the member 35 sothat its free end 41 may be secured to and clamped down on anotherportion of the member 35, by any suitable means, for example, by thebolt shown at 42.

When the member 38 is clamped upon the member 85, itis adapted to holdthe motor 29 securely in place. The motor-pump unit and its associatedradiator are thus supported by the same main frame in a manner adaptedto suppress vibration by the use of the yielding supporting bushings,here disclosed.

Motor-pump units supported by the supporting device of the presentinvention when employed in mechanical refrigerating systems of thedomestic variety are substantially noiseless when in operation andtransmit substantially no vibration to the refrigerator box when mountedtherein and in operation.

Since certain changes may be made in the above construction anddifferent embodiments of the invention could be made without departingfrom the scope thereof, it is intended that all matter contained in theabove description or shown in the accompanying drawings shall beinterpreted as illustrative and not in a limiting sense.

Having described my invention, what I claim as new and desire to secureby Letters Patent, is:

1. A supporting device for a fan motor and condenser comprisinglongitudinal base members, opposed uprights secured on said base membershaving forwardly projecting portions provided with spaced perforationsand rear portions provided with a transverse cradle, said fan motorbeing supported by said cradle, a strap securing said motor in saidcradle, fastening elements disposed in said spaced perforations andconnecting said condenser and spaced uprights, and cushioning means inthe perforations about said fastening elements whereby said condenserwill be resiliently mounted upon said uprights.

2. A supporting device for a fan motor and condenser comprising a base,uprights secured in opposed relation on said base and having forwardlyprojecting portions, a transverse motor supporting cradle carried by therear portions of said uprights, means for securing said motor in saidcradle, and means for resiliently supporting said condenser in theforwardly projecting portions of said uprights.

In testimony whereof I affix my signature.

FRANK D. PELTIE R.

